What OPCF 27 actually does
OPCF 27 — formally the Liability for Damage to Non-Owned Automobiles endorsement — bolts onto your existing Ontario auto policy and extends parts of your coverage to vehicles you're driving but don't own. Think rentals at the airport, a friend's car for a weekend move, or the loaner the dealership hands you while yours is in the shop. Without it, your personal policy's protection for those vehicles is patchy at best.
There are two flavours of the endorsement that consumers usually encounter. The base OPCF 27 extends your third-party liability and accident benefits to non-owned vehicles you drive. The more common consumer variant, OPCF 27B, adds physical-damage coverage (collision and comprehensive, often called 'all perils') for those non-owned cars — which is what most people actually want when they decline the rental counter's loss/damage waiver.
The form itself is FSRA-approved and published as a standard Ontario Automobile Policy change form by the Insurance Bureau of Canada. Brokers and insurers can't materially rewrite it — the wording is the wording — but they can decline to offer it, set their own underwriting limits, or cap the maximum value of the non-owned vehicle it will respond to.
Who actually needs it
If you rent cars more than once or twice a year, OPCF 27B is probably the cheapest physical-damage coverage you'll ever buy. Rental counter loss/damage waivers are priced per day; an endorsement on your annual policy is priced per year, and the math usually favours the endorsement by a wide margin once you're past a long weekend's worth of rental days.
It also matters if you regularly borrow cars from family or friends. Ontario auto insurance follows the vehicle first, then the driver — so the owner's policy is primary on a borrowed car, and a serious at-fault claim can blow through their limits and start chasing yours. OPCF 27 makes sure your own liability sits cleanly in the excess position, instead of leaving you arguing about whose policy responds.
Where it's less useful: if you never rent, never borrow, and don't drive employer-owned vehicles, you're paying for an exposure you don't have. And if you drive a company car as your regular commuter, OPCF 27 is the wrong tool — you likely want OPCF 28A (Reduction of Coverage as Respects Named Persons) or coverage through the employer's fleet policy, not a personal endorsement designed for occasional use.
OPCF 27 vs. the rental counter's damage waiver
The rental industry's loss/damage waiver (LDW or CDW) isn't insurance — it's a contractual promise from the rental company not to pursue you for damage to their vehicle. OPCF 27B is insurance, governed by the Ontario Automobile Policy and regulated by FSRA. The two products solve overlapping problems differently, and the distinction matters when something goes sideways.
The endorsement's upside: it's cheap relative to per-day waivers, it travels with you across rentals, and it ties into your existing policy's claims process. The downside: you're using your own policy when you damage a rental, which means a deductible applies, the claim can affect your rating at renewal, and the rental company may still hit you for 'loss of use' (the income they lose while the car is being repaired) — a charge OPCF 27 doesn't fully address. OPCF 27 contains a sub-limit for loss of use, but it may not match what the rental contract demands.
A common middle path: carry OPCF 27B for everyday rentals and borrowed cars, and only buy the counter's waiver for high-value rentals, exotic cars, or trips where the contract's loss-of-use exposure is unusually large. Read the OPCF 27 wording on the FSRA-approved form before you assume it covers a specific scenario — credit-card rental coverage, in particular, often layers oddly with it.
Costs, limits, and the trade-offs nobody mentions
OPCF 27 is one of the cheaper endorsements on an Ontario policy because the underlying exposure is intermittent — you're not driving a non-owned car every day. Exact pricing varies by insurer, driving record, and the limits and deductibles you choose, so don't anchor on a number a forum post gave you. Ask your broker for a quote tied to your actual policy.
The trade-offs marketing copy tends to skip: a claim on OPCF 27B is still a claim on your record, so a fender-bender in a rental could affect your renewal pricing the same way one in your own car would. Insurers also typically cap the value of the non-owned vehicle the endorsement will respond to — fine for a mid-size rental, potentially a problem if you're borrowing your in-law's loaded SUV.
Coverage also generally requires you to have the corresponding coverage on your own vehicle. If you've dropped collision on an older car you own, the OPCF 27B physical-damage extension to non-owned vehicles may not be available, or may be limited to what you carry on your own policy. Worth confirming with your broker before you assume you're covered when you decline the counter's waiver.
How OPCF 27 interacts with the 2026 Ontario auto reform
The 2026 Ontario auto reform package taking effect July 1, 2026 mostly reshapes the accident-benefits side of the policy — Direct Compensation – Property Damage (DCPD), Statutory Accident Benefits Schedule (SABS) defaults, and the way certain benefits become opt-in rather than mandatory. OPCF 27 isn't being rewritten as part of that package, but the coverages it extends to non-owned vehicles still ride on top of whatever your base policy looks like after the reform.
Practical implication: when the reform changes your default accident-benefits coverage, those changes also flow through to the AB protection OPCF 27 extends to you in a rental or borrowed car. If you opt down on AB to save premium on your own policy, you're opting down on the AB you'd have in a rental too. Worth thinking about before you trim coverage on the assumption it only affects your own vehicle.
For a structural walk-through of what's changing on July 1, 2026 and where endorsements like OPCF 27 sit in the new framework, see the Ontario auto reform 2026 guide.
How to actually buy it
Adding OPCF 27 (or 27B) is a phone call or email to your broker or insurer — it's a mid-term endorsement, so you don't have to wait for renewal. You'll be asked about your typical use (rentals, borrowed cars, business use), and the insurer may ask about your driving record before agreeing to add it. Some insurers won't offer the physical-damage extension to drivers with recent at-fault claims or major convictions.
If you're shopping a new policy, ask whether OPCF 27B is bundled into the quote by default — some insurers include a version of it automatically, others price it as a discrete add-on. The line item on your declarations page will name the endorsement explicitly, so you can confirm it's there.
If your broker tells you the endorsement isn't available through your current carrier, that's a signal worth listening to — it usually means the underwriter has tightened appetite for the risk, and you may want a second opinion from another broker before assuming the rental counter's waiver is your only option.
Frequently asked
Does OPCF 27 cover me when I rent a car in the US or outside Canada?
The base Ontario Automobile Policy generally extends coverage to the US, and OPCF 27 follows that geographic scope — but coverage outside Canada and the US (Mexico, Europe, the Caribbean) is typically excluded or limited. Always confirm the geographic limits with your broker before renting abroad, and don't assume your endorsement replaces the rental contract's local insurance requirements.
If I already have credit-card rental insurance, do I still need OPCF 27B?
Credit-card rental coverage is usually secondary, often limited to physical damage and theft (not liability), and frequently excludes certain vehicle classes, rental durations over a set number of days, and some countries. OPCF 27B sits on your auto policy and extends both liability and (with the B variant) physical damage. Many drivers carry both and let them layer; some skip the endorsement if they rent rarely and their card's coverage is genuinely comprehensive. Read both sets of fine print before deciding.
Will a claim on a rental car under OPCF 27 affect my insurance rates?
Yes. A claim paid out under OPCF 27 or 27B is a claim on your policy and is reported and rated like any other. An at-fault loss in a rental can affect your renewal premium the same way an at-fault loss in your own car would. That's a real trade-off versus the rental counter's damage waiver, which doesn't touch your insurance record at all.
Is OPCF 27 the same as OPCF 28A?
No. OPCF 27 extends your coverage outward to non-owned vehicles you drive. OPCF 28A reduces or excludes coverage for specifically named drivers on your own policy. They solve opposite problems — one is about adding protection where you don't own the car, the other is about removing protection for specific people who drive a car you do own.